title: Extracolonic polyposis in familial adenomatous polyposis: so near and yet so far.
mesh_terms: D011125:Adenomatous Polyposis Coli / Q000150:complications*; D004378:Duodenal Diseases / Q000209:etiology / Q000473:pathology / Q000517:prevention & control*; D006801:Humans; D044483:Intestinal Polyposis / Q000473:pathology / Q000517:prevention & control